Work

Dayside North-South Aligned Auroral Arcs

Year: 2025

Type: conference-paper

Abstract: Observations of North-South auroral arcs (or Sun-aligned) have been recorded for many years. Discrete North-South auroral arcs are located between 73-84° MLAT and are usually associated moderate auroral activity, low solar wind dynamic pressure, and a small IMF z-component. Some observations reported quasi-periodic poleward motions of North-South aligned dayside auroral arcs. This current statistical study contains nine years of All-Sky Camera images obtained from the Boreal Aurora Camera Constellation (BACC) from the Kjell Henriksen Observatory (KHO) in Longyearbyen, Svalbard (GEO: 78.148 N, 16.043 E; AACGM: 75.24 N, 111.21 E). The characteristics of discrete North-South dayside auroral arcs, including spatial and temporal occurrence frequency, intensity, motion, and solar wind conditions occurring during their formation are reported.

Source: Pepperdine Digital Commons (Pepperdine University)

Authors: Ramirez, Taiel, Fasel, Gerard J, Farrar, Wyatt, Woolfolk, Mason, Black, Andrea, Diggs, Cullen, Shin, Clay, Chiu, Jordan, Lee, Sun-Hee, Mann, John, Sigernes, Fred, Lorentzen, Dag A

Institutions: Pepperdine University, Goddard Space Flight Center, University Centre in Svalbard

Language: English

Topic: Ionosphere and magnetosphere dynamics

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Aeronautics and Space Administration, Goddard Space Flight Center

OpenAlex ID: W7055441893

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